(assigned, not assigned, special, etc.)
The "North American Numbering Plan" has a myriad of area and special codes. This page covers all "possible" codes and other codes in the 300-399 range along with their status.
Important note: The status of area and other codes is constantly changing. This is the latest information we have.
codes in the 200-299 range
codes in the 300-399 range - THIS PAGE
codes in the 400-499 range
codes in the 500-599 range
codes in the 600-699 range
codes in the 700-799 range
codes in the 800-899 range
codes in the 900-999 range
Code |
Description |
300 | (reserved - easily recognizable number) |
301 | Maryland |
302 | Delaware |
303 | Colorado |
304 | West Virginia |
305 | Florida |
306 | Manitoba |
307 | Wyoming |
308 | Nebrasak |
309 | Illinois |
310 | California |
311 | (not an area code - non-emergency number to reach local government - dial three digits) |
312 | Illinois |
313 | Michigan |
314 | Missouri |
315 | New York |
316 | Kansas |
317 | Indiana |
318 | Louisiana |
319 | Iowa |
320 | Minnesota |
321 | Florida |
322 | (reserved - easily recognizable number) |
323 | California |
324 | Florida |
325 | Texas |
326 | Ohio |
327 | Arkansas |
328 | (not assigned) |
329 | New York |
330 | Ohio |
331 | Illinois |
332 | New York |
333 | (reserved - easily recognizable number) |
334 | Alabama |
335 | (not assigned) |
336 | North Carolina |
337 | Louisiana |
338 | (not assigned) |
339 | Massachusetts |
340 | U.S. Virgin Islands |
341 | California |
342 | (not assigned) |
343 | Ontario |
344 | (reserved - easily recognizable number) |
345 | Cayman Islands |
346 | Texas |
347 | New York |
348 | (not assigned) |
349 | (not assigned) |
350 | California |
351 | Massachusetts |
352 | Florida |
353 | Wisconsin |
354 | Quebec |
355 | (reserved - easily recognizable number) |
356 | (not assigned) |
357 | (not assigned) |
358 | (not assigned) |
359 | (not assigned) |
360 | Washington |
361 | Texas |
362 | (not assigned) |
363 | New York |
364 | Kentucky |
365 | Ontario |
366 | (reserved - easily recognizable number) |
367 | Quebec |
368 | Alberta |
369 | California |
370 | (reserved for consecutive numbers if ever needed) |
371 | (reserved for consecutive numbers if ever needed) |
372 | (reserved for consecutive numbers if ever needed) |
373 | (reserved for consecutive numbers if ever needed) |
374 | (reserved for consecutive numbers if ever needed) |
375 | (reserved for consecutive numbers if ever needed) |
376 | (reserved for consecutive numbers if ever needed) |
377 | (reserved for consecutive numbers if ever needed) (reserved - easily recognizable number) |
378 | (reserved for consecutive numbers if ever needed) |
379 | (reserved for consecutive numbers if ever needed) |
380 | Ohio |
381 | (not assigned) |
382 | Ontario |
383 | (not assigned) |
384 | (not assigned) |
385 | Utah |
386 | Florida |
387 | (reserved for Toronto, Ontario) |
388 | (reserved - easily recognizable number) |
389 | (not assigned) |
390 | (reserved for possible numbering expansion in the future) |
391 | (reserved for possible numbering expansion in the future) |
392 | (reserved for possible numbering expansion in the future) |
393 | (reserved for possible numbering expansion in the future) |
394 | (reserved for possible numbering expansion in the future) |
395 | (reserved for possible numbering expansion in the future) |
396 | (reserved for possible numbering expansion in the future) |
397 | (reserved for possible numbering expansion in the future) |
398 | (reserved for possible numbering expansion in the future) |
399 | (reserved for possible numbering expansion in the future) |
codes in the 200-299 range
codes in the 300-399 range - THIS PAGE
codes in the 400-499 range
codes in the 500-599 range
codes in the 600-699 range
codes in the 700-799 range
codes in the 800-899 range
codes in the 900-999 range